Porsche 911 997 Boxster 987 Front Lower Wishbone Mounting Plate 99734114505

Porsche 911 997 Boxster 987 Front Lower Wishbone Mounting Plate 99734114505 is an original front suspension structural component designed for Porsche 911 997 and Boxster 987 models. As part of the Longitudinal body frame parts and brackets group, it is responsible for providing stable support for the wishbone and ensuring the correct transfer of loads from the wheel to the body structure. Using this OEM component allows you to maintain the vehicle's factory front geometry and proper handling while keeping repair costs reasonable.

Specifications and technical data

• SKU: 99734114505
• Mark: Porsche
• Condition: Used
• OEM Part Number: 99734114505
• Substitutable numbers: 99734114505, 997 341 145 05
• Location on the vehicle: Front
• Part type: Subframe
• Category: Frame Rails & Subframes

Function and role of the wishbone mounting plate in Porsche suspension

The front lower wishbone mounting plate plays a key role in the front axle suspension system. It connects the wishbone to the load-bearing elements of the body, ensuring:

• stable support for the wishbone mounting points,
• proper transfer of longitudinal and lateral forces during braking and cornering,
• maintenance of the manufacturer-specified wheel geometry, which translates into steering precision,
• reduction of unwanted movement of suspension components during dynamic driving. Thanks to the use of an original wishbone mounting plate, the structural integrity of the front body section is preserved, which is important for both safety and the durability of other suspension components.

Purpose and vehicle placement

The described plate is intended for installation in the front part of the vehicle, in the area where the lower wishbone is mounted. Structurally, it works with:

• the front lower wishbone,
• subframe elements and body brackets,
• other steering and front axle suspension components. Being dedicated to Porsche 911 997 and Boxster 987 models means that its shape, mounting points, and rigidity are perfectly matched to the specific chassis architecture of these sports cars. Using the correct wishbone mounting plate is particularly important during post-collision repairs, replacing damaged suspension elements, or restoring factory geometry settings.

Benefits of using an original used wishbone mounting plate

Choosing a used OEM component instead of low-quality aftermarket replacements allows you to maintain the characteristic Porsche handling and predictable cornering behavior. The main advantages of this solution include:

• factory fitment to the body and wishbone mounting points,
• preservation of the structural rigidity designed by the manufacturer,
• reduced risk of issues with wheel alignment and camber settings,
• more predictable interaction with other suspension components compared to generic replacements. A used component allows you to optimize repair costs while maintaining a high level of safety and driving comfort, which is especially important in vehicles with a sporty character.

Condition, verification, and part selection

The product is offered as a used part, sourced from vehicle dismantling. Such components are typically verified for mechanical damage, excessive deformation, or corrosion in areas critical to structural rigidity. When selecting a wishbone mounting plate for a specific Porsche, it is worth paying attention to:

• compatibility with the body version and model generation,
• the type of suspension used in the specific vehicle,
• the history of any bodywork or chassis repairs in the front area. The use of original parts from this group is highly recommended for vehicles where steering precision and consistent chassis behavior on both road and track are a priority.

Expanding repairs within the front suspension structure

If you are planning a comprehensive repair or upgrade of the front suspension area in your Porsche and need other elements from the same group, such as additional brackets, longitudinal load-bearing elements, or structural mounts, check out the available parts in the Porsche longitudinal body frame parts and brackets category.

Technical support and selection of used components

When planning repairs to the suspension and body load-bearing elements, it is worth considering the general principles of selecting used parts and their impact on the durability of the entire system. It may be helpful to read the guide on choosing between refurbishment and dismantled components, available in the article Refurbished or original used – which part to choose for repairs?. Additionally, if you are interested in the broader context of drivetrain operation and how suspension interacts with all-wheel drive, it is worth reading the analysis of AWD systems in the article xDrive, 4Matic, quattro or 4Motion – a comparison of AWD systems from BMW, Mercedes, Audi, and VW.